论文标题
固体中高谐波产生的机制
Mechanisms of high harmonic generation in solids
论文作者
论文摘要
在极端非线性光学元件中将共振与非谐振过程分开的长期存在问题。理论形式主义应用于固体中的高谐波产生（HHG），并揭示了对主要的激光和材料依赖机制的更深入的看法。半导体中的中红外驱动的HHG由谐振线电流主导。由于动态鲜明的变化，虚拟过程在电介质中的近红外驱动HHG中的重要性增长。最后，我们的分析确定了微观单电子孔理论的局限性。
The long standing issue of separating resonant from non-resonant processes in extreme nonlinear optics is resolved. The theoretical formalism is applied to high harmonic generation (HHG) in solids and reveals a deeper view into the dominant laser and material dependent mechanisms. Mid-infrared driven HHG in semiconductors is dominated by the resonant interband current. As a result of the dynamic Stark shift, virtual processes gain in importance in near-infrared driven HHG in dielectrics. Finally, our analysis identifies limitations of microscopic one-electron-hole theories.
